Employee vs. Employer Contributions
A 401(k) often has both employee and employer contributions. The participant’s own salary deferrals are usually entirely marital if earned during the marriage. But employer contributions may be subject to a vesting schedule, and only the vested portion is divisible in a QDRO.
Your QDRO must specify whether the alternate payee will share in just the participant’s contributions—or both participant and employer contributions. The plan administrator won’t make assumptions. Be specific.

